The start of work to pull the ts calls out of the application helpers so we
ensure that ts is not called twice eg ts(ts('AO3 News'))
Didn't use symbols correctly
Add more things to the header key
Add a dashboard key
Make mergable
Update _admin_nav.html.erb
Update _wrangler_dashboard.html.erb
Update manage.html.erb
Use brackets with link_to consistently
Merge pull request #1747 from zz9pzza/issue_4040

0.9.18 - Issue 4040 remove ts(ts('hello world')) behaviour ( fix the headers )